--- a/elasticsearch.rst	Thu Nov 16 11:23:57 2017 +0200
+++ b/elasticsearch.rst	Sat Nov 25 20:59:48 2017 +0200
@@ -5,6 +5,12 @@
 .. contents::
    :local:
 
+Elasticsearch documentation
+===========================
+
+https://amsterdam.luminis.eu/2016/10/18/elasticsearch-5-is-coming-what-is-new-and-improved/
+  New features of ES 5.
+
 REST syntax conventions
 =======================
 
@@ -112,10 +118,14 @@
 https://www.elastic.co/guide/en/elasticsearch/reference/current/search-explain.html
   Explain API.
 
+https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-disk-usage.html
+  Tune for disk usage.
 https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-indexing-speed.html
   Tune for indexing speed.
 https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-search-speed.html
   Tune for search speed.
+https://www.elastic.co/blog/filebeat-modiles-access-logs-and-elasticsearch-storage-requirements
+  Filebeat modules, access logs and Elasticsearch storage requirements.
 
 JSON search syntax
 ==================